CVE-2026-31683
In the Linux kernel, the following vulnerability has been resolved: batman-adv: avoid OGM aggregation when skb tailroom is insufficient When OGM aggregation state is toggled at runtime, an existing forwarded packet may have been allocated with only…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.12%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: avoid OGM aggregation when skb tailroom is insufficient When OGM aggregation state is toggled at runtime, an existing forwarded packet may have been allocated with only packet_len bytes, while a later packet can still be selected for aggregation. Appending in this case can hit skb_put overflow conditions. Reject aggregation when the target skb tailroom cannot accommodate the new packet. The caller then falls back to creating a new forward packet instead of appending.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.12% probability · 2th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/0b10a8b355c3f71012ce89289ec2c2f5e3bfd6c1Patch
- https://git.kernel.org/stable/c/0d4aef630be9d5f9c1227d07669c26c4383b5ad0Patch
- https://git.kernel.org/stable/c/0e35db29fc5a97a8553f7c2d3a2ba730e46b1ee8Patch
- https://git.kernel.org/stable/c/1ada20331f2df2a942d6b83ae1f04a304b642e2aPatch
- https://git.kernel.org/stable/c/67176c96f325837b0bb3e9538ca2eba414f447d8Patch
- https://git.kernel.org/stable/c/6755347c5f9bdd44dee80f692208b056fcd40a52Patch
- https://git.kernel.org/stable/c/6e40ebb999c2c3d2fbb3cacb61f0384ee6e69075Patch
- https://git.kernel.org/stable/c/eda89a1bae0602aec8314ced299bb243b9f9aeefPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.